(6-fluoro-1H-indol-3-yl)-(4-hydroxy-pyrrolidin-2-yl)-methanone 、
N-Boc-L-叔亮氨酸 在
N-甲基吗啉 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N-甲基吡咯烷酮 为溶剂,
以60%的产率得到{1-[2-(6-fluoro-1H-indole-3-carbonyl)-4-hydroxy-pyrrolidine-1-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester